215 lines
6.5 KiB
Go
215 lines
6.5 KiB
Go
// Copyright 2019 The Gitea Authors.
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// All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package pull
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import (
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"context"
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"fmt"
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"io/ioutil"
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"os"
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"strings"
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"code.gitea.io/gitea/models"
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"code.gitea.io/gitea/modules/git"
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"code.gitea.io/gitea/modules/graceful"
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"code.gitea.io/gitea/modules/log"
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"code.gitea.io/gitea/modules/notification"
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"code.gitea.io/gitea/modules/setting"
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"code.gitea.io/gitea/modules/sync"
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"code.gitea.io/gitea/modules/timeutil"
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"github.com/unknwon/com"
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)
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// pullRequestQueue represents a queue to handle update pull request tests
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var pullRequestQueue = sync.NewUniqueQueue(setting.Repository.PullRequestQueueLength)
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// AddToTaskQueue adds itself to pull request test task queue.
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func AddToTaskQueue(pr *models.PullRequest) {
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go pullRequestQueue.AddFunc(pr.ID, func() {
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pr.Status = models.PullRequestStatusChecking
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if err := pr.UpdateCols("status"); err != nil {
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log.Error("AddToTaskQueue.UpdateCols[%d].(add to queue): %v", pr.ID, err)
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}
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})
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}
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// checkAndUpdateStatus checks if pull request is possible to leaving checking status,
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// and set to be either conflict or mergeable.
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func checkAndUpdateStatus(pr *models.PullRequest) {
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// Status is not changed to conflict means mergeable.
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if pr.Status == models.PullRequestStatusChecking {
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pr.Status = models.PullRequestStatusMergeable
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}
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// Make sure there is no waiting test to process before leaving the checking status.
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if !pullRequestQueue.Exist(pr.ID) {
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if err := pr.UpdateCols("status, conflicted_files"); err != nil {
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log.Error("Update[%d]: %v", pr.ID, err)
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}
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}
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}
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// getMergeCommit checks if a pull request got merged
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// Returns the git.Commit of the pull request if merged
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func getMergeCommit(pr *models.PullRequest) (*git.Commit, error) {
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if pr.BaseRepo == nil {
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var err error
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pr.BaseRepo, err = models.GetRepositoryByID(pr.BaseRepoID)
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if err != nil {
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return nil, fmt.Errorf("GetRepositoryByID: %v", err)
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}
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}
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indexTmpPath, err := ioutil.TempDir(os.TempDir(), "gitea-"+pr.BaseRepo.Name)
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if err != nil {
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return nil, fmt.Errorf("Failed to create temp dir for repository %s: %v", pr.BaseRepo.RepoPath(), err)
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}
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defer os.RemoveAll(indexTmpPath)
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headFile := pr.GetGitRefName()
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// Check if a pull request is merged into BaseBranch
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_, err = git.NewCommand("merge-base", "--is-ancestor", headFile, pr.BaseBranch).RunInDirWithEnv(pr.BaseRepo.RepoPath(), []string{"GIT_INDEX_FILE=" + indexTmpPath, "GIT_DIR=" + pr.BaseRepo.RepoPath()})
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if err != nil {
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// Errors are signaled by a non-zero status that is not 1
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if strings.Contains(err.Error(), "exit status 1") {
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return nil, nil
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}
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return nil, fmt.Errorf("git merge-base --is-ancestor: %v", err)
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}
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commitIDBytes, err := ioutil.ReadFile(pr.BaseRepo.RepoPath() + "/" + headFile)
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if err != nil {
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return nil, fmt.Errorf("ReadFile(%s): %v", headFile, err)
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}
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commitID := string(commitIDBytes)
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if len(commitID) < 40 {
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return nil, fmt.Errorf(`ReadFile(%s): invalid commit-ID "%s"`, headFile, commitID)
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}
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cmd := commitID[:40] + ".." + pr.BaseBranch
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// Get the commit from BaseBranch where the pull request got merged
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mergeCommit, err := git.NewCommand("rev-list", "--ancestry-path", "--merges", "--reverse", cmd).RunInDirWithEnv("", []string{"GIT_INDEX_FILE=" + indexTmpPath, "GIT_DIR=" + pr.BaseRepo.RepoPath()})
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if err != nil {
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return nil, fmt.Errorf("git rev-list --ancestry-path --merges --reverse: %v", err)
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} else if len(mergeCommit) < 40 {
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// PR was fast-forwarded, so just use last commit of PR
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mergeCommit = commitID[:40]
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}
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gitRepo, err := git.OpenRepository(pr.BaseRepo.RepoPath())
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if err != nil {
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return nil, fmt.Errorf("OpenRepository: %v", err)
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}
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defer gitRepo.Close()
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commit, err := gitRepo.GetCommit(mergeCommit[:40])
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if err != nil {
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return nil, fmt.Errorf("GetCommit: %v", err)
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}
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return commit, nil
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}
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// manuallyMerged checks if a pull request got manually merged
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// When a pull request got manually merged mark the pull request as merged
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func manuallyMerged(pr *models.PullRequest) bool {
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commit, err := getMergeCommit(pr)
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if err != nil {
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log.Error("PullRequest[%d].getMergeCommit: %v", pr.ID, err)
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return false
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}
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if commit != nil {
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pr.MergedCommitID = commit.ID.String()
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pr.MergedUnix = timeutil.TimeStamp(commit.Author.When.Unix())
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pr.Status = models.PullRequestStatusManuallyMerged
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merger, _ := models.GetUserByEmail(commit.Author.Email)
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// When the commit author is unknown set the BaseRepo owner as merger
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if merger == nil {
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if pr.BaseRepo.Owner == nil {
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if err = pr.BaseRepo.GetOwner(); err != nil {
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log.Error("BaseRepo.GetOwner[%d]: %v", pr.ID, err)
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return false
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}
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}
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merger = pr.BaseRepo.Owner
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}
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pr.Merger = merger
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pr.MergerID = merger.ID
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if err = pr.SetMerged(); err != nil {
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log.Error("PullRequest[%d].setMerged : %v", pr.ID, err)
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return false
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}
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baseGitRepo, err := git.OpenRepository(pr.BaseRepo.RepoPath())
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if err != nil {
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log.Error("OpenRepository[%s] : %v", pr.BaseRepo.RepoPath(), err)
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return false
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}
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notification.NotifyMergePullRequest(pr, merger, baseGitRepo)
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log.Info("manuallyMerged[%d]: Marked as manually merged into %s/%s by commit id: %s", pr.ID, pr.BaseRepo.Name, pr.BaseBranch, commit.ID.String())
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return true
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}
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return false
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}
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// TestPullRequests checks and tests untested patches of pull requests.
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// TODO: test more pull requests at same time.
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func TestPullRequests(ctx context.Context) {
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go func() {
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prs, err := models.GetPullRequestIDsByCheckStatus(models.PullRequestStatusChecking)
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if err != nil {
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log.Error("Find Checking PRs: %v", err)
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return
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}
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for _, prID := range prs {
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select {
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case <-ctx.Done():
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return
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default:
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pullRequestQueue.Add(prID)
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}
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}
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}()
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// Start listening on new test requests.
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for {
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select {
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case prID := <-pullRequestQueue.Queue():
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log.Trace("TestPullRequests[%v]: processing test task", prID)
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pullRequestQueue.Remove(prID)
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id := com.StrTo(prID).MustInt64()
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pr, err := models.GetPullRequestByID(id)
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if err != nil {
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log.Error("GetPullRequestByID[%s]: %v", prID, err)
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continue
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} else if manuallyMerged(pr) {
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continue
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} else if err = TestPatch(pr); err != nil {
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log.Error("testPatch[%d]: %v", pr.ID, err)
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continue
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}
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checkAndUpdateStatus(pr)
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case <-ctx.Done():
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pullRequestQueue.Close()
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log.Info("PID: %d Pull Request testing shutdown", os.Getpid())
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return
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}
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}
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}
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// Init runs the task queue to test all the checking status pull requests
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func Init() {
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go graceful.GetManager().RunWithShutdownContext(TestPullRequests)
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}
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